CN109244628B - Waterproof marine antenna - Google Patents
Waterproof marine antenna Download PDFInfo
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- CN109244628B CN109244628B CN201810990278.6A CN201810990278A CN109244628B CN 109244628 B CN109244628 B CN 109244628B CN 201810990278 A CN201810990278 A CN 201810990278A CN 109244628 B CN109244628 B CN 109244628B
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- antenna
- waterproof
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- outer cover
- hole
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- 239000000853 adhesive Substances 0.000 claims abstract description 4
- 230000001070 adhesive effect Effects 0.000 claims abstract description 4
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 abstract description 11
- 239000003292 glue Substances 0.000 abstract description 4
- OKTJSMMVPCPJKN-UHFFFAOYSA-N Carbon Chemical compound [C] OKTJSMMVPCPJKN-UHFFFAOYSA-N 0.000 description 30
- 239000002041 carbon nanotube Substances 0.000 description 30
- 229910021393 carbon nanotube Inorganic materials 0.000 description 30
- PMHQVHHXPFUNSP-UHFFFAOYSA-M copper(1+);methylsulfanylmethane;bromide Chemical compound Br[Cu].CSC PMHQVHHXPFUNSP-UHFFFAOYSA-M 0.000 description 30
- 229920001046 Nanocellulose Polymers 0.000 description 28
- 238000009987 spinning Methods 0.000 description 28
- 239000002131 composite material Substances 0.000 description 25
- 239000000835 fiber Substances 0.000 description 23
- FPAFDBFIGPHWGO-UHFFFAOYSA-N dioxosilane;oxomagnesium;hydrate Chemical compound O.[Mg]=O.[Mg]=O.[Mg]=O.O=[Si]=O.O=[Si]=O.O=[Si]=O.O=[Si]=O FPAFDBFIGPHWGO-UHFFFAOYSA-N 0.000 description 19
- 239000000243 solution Substances 0.000 description 16
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- 239000003365 glass fiber Substances 0.000 description 12
- 230000000052 comparative effect Effects 0.000 description 11
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- 239000008108 microcrystalline cellulose Substances 0.000 description 10
- 229940016286 microcrystalline cellulose Drugs 0.000 description 10
- LFTLOKWAGJYHHR-UHFFFAOYSA-N N-methylmorpholine N-oxide Chemical compound CN1(=O)CCOCC1 LFTLOKWAGJYHHR-UHFFFAOYSA-N 0.000 description 9
- 239000007864 aqueous solution Substances 0.000 description 9
- 238000010041 electrostatic spinning Methods 0.000 description 9
- 238000002360 preparation method Methods 0.000 description 9
- 239000003963 antioxidant agent Substances 0.000 description 8
- 230000003078 antioxidant effect Effects 0.000 description 8
- 239000008367 deionised water Substances 0.000 description 8
- 229910021641 deionized water Inorganic materials 0.000 description 8
- 239000004611 light stabiliser Substances 0.000 description 8
- 239000000314 lubricant Substances 0.000 description 8
- 239000002994 raw material Substances 0.000 description 8
- 239000000725 suspension Substances 0.000 description 8
- 229920002678 cellulose Polymers 0.000 description 6
- 239000001913 cellulose Substances 0.000 description 6
- 239000000463 material Substances 0.000 description 6
- 238000001125 extrusion Methods 0.000 description 5
- 238000002156 mixing Methods 0.000 description 5
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- 238000001132 ultrasonic dispersion Methods 0.000 description 5
- CJDNEKOMKXLSBN-UHFFFAOYSA-N 1-chloro-3-(4-chlorophenyl)benzene Chemical compound C1=CC(Cl)=CC=C1C1=CC=CC(Cl)=C1 CJDNEKOMKXLSBN-UHFFFAOYSA-N 0.000 description 4
- JKIJEFPNVSHHEI-UHFFFAOYSA-N Phenol, 2,4-bis(1,1-dimethylethyl)-, phosphite (3:1) Chemical compound CC(C)(C)C1=CC(C(C)(C)C)=CC=C1OP(OC=1C(=CC(=CC=1)C(C)(C)C)C(C)(C)C)OC1=CC=C(C(C)(C)C)C=C1C(C)(C)C JKIJEFPNVSHHEI-UHFFFAOYSA-N 0.000 description 4
- BGYHLZZASRKEJE-UHFFFAOYSA-N [3-[3-(3,5-ditert-butyl-4-hydroxyphenyl)propanoyloxy]-2,2-bis[3-(3,5-ditert-butyl-4-hydroxyphenyl)propanoyloxymethyl]propyl] 3-(3,5-ditert-butyl-4-hydroxyphenyl)propanoate Chemical compound CC(C)(C)C1=C(O)C(C(C)(C)C)=CC(CCC(=O)OCC(COC(=O)CCC=2C=C(C(O)=C(C=2)C(C)(C)C)C(C)(C)C)(COC(=O)CCC=2C=C(C(O)=C(C=2)C(C)(C)C)C(C)(C)C)COC(=O)CCC=2C=C(C(O)=C(C=2)C(C)(C)C)C(C)(C)C)=C1 BGYHLZZASRKEJE-UHFFFAOYSA-N 0.000 description 4
- 239000011248 coating agent Substances 0.000 description 4
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- 238000012360 testing method Methods 0.000 description 4
- 238000005406 washing Methods 0.000 description 4
- 238000005303 weighing Methods 0.000 description 4
- 229940116351 sebacate Drugs 0.000 description 3
- CXMXRPHRNRROMY-UHFFFAOYSA-L sebacate(2-) Chemical compound [O-]C(=O)CCCCCCCCC([O-])=O CXMXRPHRNRROMY-UHFFFAOYSA-L 0.000 description 3
- KDYFGRWQOYBRFD-UHFFFAOYSA-L succinate(2-) Chemical compound [O-]C(=O)CCC([O-])=O KDYFGRWQOYBRFD-UHFFFAOYSA-L 0.000 description 3
- 238000010586 diagram Methods 0.000 description 2
- 238000005516 engineering process Methods 0.000 description 2
- 238000009413 insulation Methods 0.000 description 2
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- XAGFODPZIPBFFR-UHFFFAOYSA-N aluminium Chemical compound [Al] XAGFODPZIPBFFR-UHFFFAOYSA-N 0.000 description 1
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Classifications
-
- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01Q—ANTENNAS, i.e. RADIO AERIALS
- H01Q1/00—Details of, or arrangements associated with, antennas
- H01Q1/12—Supports; Mounting means
-
- C—CHEMISTRY; METALLURGY
- C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
- C08L—COMPOSITIONS OF MACROMOLECULAR COMPOUNDS
- C08L67/00—Compositions of polyesters obtained by reactions forming a carboxylic ester link in the main chain; Compositions of derivatives of such polymers
- C08L67/02—Polyesters derived from dicarboxylic acids and dihydroxy compounds
-
- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01Q—ANTENNAS, i.e. RADIO AERIALS
- H01Q1/00—Details of, or arrangements associated with, antennas
- H01Q1/27—Adaptation for use in or on movable bodies
- H01Q1/34—Adaptation for use in or on ships, submarines, buoys or torpedoes
-
- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01Q—ANTENNAS, i.e. RADIO AERIALS
- H01Q1/00—Details of, or arrangements associated with, antennas
- H01Q1/42—Housings not intimately mechanically associated with radiating elements, e.g. radome
-
- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01Q—ANTENNAS, i.e. RADIO AERIALS
- H01Q1/00—Details of, or arrangements associated with, antennas
- H01Q1/50—Structural association of antennas with earthing switches, lead-in devices or lightning protectors
-
- C—CHEMISTRY; METALLURGY
- C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
- C08L—COMPOSITIONS OF MACROMOLECULAR COMPOUNDS
- C08L2205/00—Polymer mixtures characterised by other features
- C08L2205/02—Polymer mixtures characterised by other features containing two or more polymers of the same C08L -group
- C08L2205/025—Polymer mixtures characterised by other features containing two or more polymers of the same C08L -group containing two or more polymers of the same hierarchy C08L, and differing only in parameters such as density, comonomer content, molecular weight, structure
-
- C—CHEMISTRY; METALLURGY
- C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
- C08L—COMPOSITIONS OF MACROMOLECULAR COMPOUNDS
- C08L2205/00—Polymer mixtures characterised by other features
- C08L2205/14—Polymer mixtures characterised by other features containing polymeric additives characterised by shape
- C08L2205/16—Fibres; Fibrils
Landscapes
- Chemical & Material Sciences (AREA)
- Health & Medical Sciences (AREA)
- Chemical Kinetics & Catalysis (AREA)
- Medicinal Chemistry (AREA)
- Polymers & Plastics (AREA)
- Organic Chemistry (AREA)
- Details Of Aerials (AREA)
Abstract
The invention relates to the technical field of antennas, in particular to a waterproof marine antenna, which comprises an outer cover and a base, wherein the outer cover is provided with a plurality of radiating holes; the base is embedded at the bottom of the outer cover; a waterproof adhesive is arranged between the base and the outer cover; the waterproof marine antenna also comprises a holding pole bracket; the holding pole bracket comprises a connecting part and a fixing part; the connecting part is provided with a first through hole; the base is provided with a second through hole; a waterproof joint is arranged between the first through hole and the second through hole; the waterproof joint sequentially penetrates through the first through hole and the second through hole and then stretches into the outer cover. According to the invention, the base is embedded at the bottom of the outer cover, the waterproof glue is arranged between the base and the outer cover, so that water can be prevented from entering the antenna from a gap between the outer cover and the base, and in addition, the waterproof joint is arranged to communicate the inside and the outside of the antenna, so that the waterproof performance of the antenna can be further enhanced.
Description
Technical Field
The invention relates to the technical field of antennas, in particular to a waterproof marine antenna.
Background
In recent years, with the development of information technology, the demand of a motion carrier for information is obviously increased, in order to ensure that a motion carrier can stably receive signals of a satellite, the mobile satellite communication technology is rapidly and widely developed at home and abroad, a satellite antenna is an important component part for realizing accurate guidance and accurate positioning of a satellite system, a marine antenna can provide various information and entertainment signals for a ship, and has important significance for ensuring the navigation safety of the ship and improving the navigation environment.
Disclosure of Invention
The invention aims to overcome the defects and provide the waterproof marine antenna which has good waterproof performance.
In order to achieve the above object, the present invention is specifically as follows: a waterproof marine antenna comprises an outer cover and a base; the base is embedded at the bottom of the outer cover; a waterproof adhesive is arranged between the base and the outer cover;
the waterproof marine antenna also comprises a holding pole bracket; the holding pole bracket comprises a connecting part and a fixing part; the connecting part is provided with a first through hole; the base is provided with a second through hole; a waterproof joint is arranged between the first through hole and the second through hole; the waterproof joint sequentially penetrates through the first through hole and the second through hole and then stretches into the outer cover.
The invention is further arranged that a bottom plate and a top plate are arranged in the outer cover; a PCB is arranged between the bottom plate and the top plate; the PCB board is connected with the waterproof connector.
The invention is further characterized in that a plurality of support columns are arranged between the bottom plate and the top plate at equal intervals.
The invention is further arranged that the bottom plate is provided with a nut; the base is provided with a locking screw; the base is connected with the bottom plate through locking screws and nuts.
The invention further provides that a fastening screw is arranged between the outer cover and the base.
The invention is further arranged that the fixing part is provided with a plurality of fixing holes.
The waterproof connector is further arranged to be connected with the connecting part through screws.
The invention is further arranged that the top plate is provided with a first antenna, a second antenna, a third antenna and a fourth antenna; the first antenna, the second antenna, the third antenna and the fourth antenna are all electrically connected with the PCB.
The outer cover is obtained by injection molding of a heat-conducting and insulating PET composite material, and the heat-conducting and insulating PET composite material comprises the following raw materials in parts by weight:
the heat-conducting fiber consists of nano cellulose coated with carbon nano tubes and nano aluminum nitride loaded on the surface of the nano cellulose.
The existing general heat conducting filler, such as nano aluminum nitride, is added into PET material in an amount exceeding 30wt%, the PET material has better heat conducting property, and the nano aluminum nitride is difficult to disperse and is easy to generate stress concentration phenomenon, so that the mechanical property of PET is greatly reduced, but the addition amount is less than 30wt%, and enough heat conducting passage is not formed in the PET material, so that the improvement degree of the heat conducting is lower.
Carbon nanotubes have good heat transfer properties, with a thermal conductivity 2-3 orders of magnitude higher than aluminum nitride, but the addition of carbon nanotubes to PET materials is generally not considered in order not to destroy the insulation of the PET material. According to the invention, the nano-cellulose is used for coating the carbon nano-tube, so that the surface of the carbon nano-tube is provided with a layer of insulator, the improvement of conductivity caused by the direct contact of the carbon nano-tube to form a conductive path is avoided, and meanwhile, the nano-aluminum nitride is loaded on the nano-cellulose, so that the aluminum nitride-nano-cellulose-carbon nano-tube forms a heat conduction path, and the heat conductivity of the PET composite material is greatly reduced; in addition, due to the fiber property of the nanocellulose and the rigidity of the carbon nano tube and the nano aluminum nitride, the stretchability and the impact resistance of the PET composite material are also improved better.
Wherein the diameter of the nanocellulose is 400-600nm, and the length is 62-103 mu m. By controlling the diameter and the length of the nano cellulose, the nano cellulose can become a high-efficiency coating body and a loading body, the carbon nano tube is effectively coated, and nano aluminum nitride is loaded on the porous surface of the nano cellulose, so that the problem that the nano material is easy to agglomerate in the process of melt extrusion is solved.
Wherein the grain diameter of the nano aluminum nitride is 66-79nm. The nanometer aluminum nitride with the particle size is favorable for being loaded on nanometer cellulose, and meanwhile, the improvement degree of the thermal conductivity of the PET composite material is higher.
The preparation method of the heat conducting fiber comprises the following steps:
(1) Dissolving microcrystalline cellulose in the N-methylmorpholine oxide aqueous solution to obtain a clear spinning stock solution, wherein the dosage of the microcrystalline cellulose is 5-7wt% of the N-methylmorpholine oxide aqueous solution;
(2) Adding the carbon nano tube into the clarified spinning solution, stirring and homogenizing to obtain suspension spinning solution, wherein the dosage of the carbon nano tube is 3-5wt% of the clarified spinning solution;
(3) Carrying out electrostatic spinning on the suspension spinning solution to obtain the nano cellulose coated with the carbon nano tube;
(4) Adding nano aluminum nitride and nano cellulose into deionized water, performing ultrasonic dispersion for 2-4h, and performing centrifugal washing and drying to obtain the heat conducting fiber, wherein the mass ratio of the nano aluminum nitride to the nano cellulose to the deionized water is 1:2-4:50-70.
According to the invention, through dissolution and regeneration of microcrystalline cellulose, in the electrostatic spraying process, N-methylmorpholine oxide aqueous solution is evaporated, so that microcrystalline cellulose is separated out and coats carbon nanotubes, and finally, through ultrasonic dispersion, nano aluminum nitride is loaded on the surface of the nanocellulose, thereby completing preparation of heat conducting fibers, and the heat conducting fibers show good dispersibility in PET materials.
In the step (3), the spinning voltage of electrostatic spinning is 20-40kV, and the spinning temperature is 30-40 ℃. By properly controlling the conditions of electrostatic spinning, the structural stability of the nanocellulose and the effective coating property of the carbon nano tube can be effectively improved.
Wherein the diameter of the glass fiber is 6-18 mu m, and the length-diameter ratio is 16-23:1. The mechanical properties can be effectively improved by controlling the glass fibers and the aspect ratio, but the addition of the glass fibers does not have an excessive influence on the thermal conductivity, and for this reason, the glass fibers are preferably used in an amount of 5 to 10 parts.
The lubricant consists of first flaky talcum powder and second flaky talcum powder according to the weight ratio of 1-2:1, wherein the average particle size of the first flaky talcum powder is 19-31 mu m, the length-diameter ratio is 2.9-4.5:1, the average particle size of the second flaky talcum powder is 49-77 mu m, and the length-diameter ratio is 1.4-2.2:1. According to the invention, the flaky talcum powder with different average particle diameters and length-diameter ratios is used in combination, the first flaky talcum powder has a lower particle diameter and a higher length-diameter ratio, so that the melt fluidity of PET can be effectively improved, the mixing and dispersion of PET, heat conducting fibers and glass fibers are facilitated, the second flaky talcum powder has a higher particle diameter and a lower length-diameter ratio, has better dispersibility in PET, has better stability, and can improve the mechanical property of PET composite materials.
Wherein the light stabilizer is bis (1, 2, 6-pentamethyl-4-piperidyl) sebacate and/or poly (1-hydroxyethyl-2, 6-tetramethyl-4-hydroxypiperidine) succinate.
Wherein the antioxidant consists of an antioxidant 1010 and an antioxidant 168 in a weight ratio of 1:1.
The preparation method of the heat-conducting and insulating PET composite material comprises the following steps: weighing the raw materials according to the parts by weight, mixing PET, a lubricant, a light stabilizer and an antioxidant, adding the mixture into an extruder from a main feeding port, adding heat-conducting fibers and glass fibers into the extruder from a side feeding port, and performing melt extrusion granulation to obtain the heat-conducting and insulating PET composite material.
The beneficial effects of the invention are as follows: according to the invention, the base is embedded at the bottom of the outer cover, the waterproof glue is arranged between the base and the outer cover, so that water can be prevented from entering the antenna from a gap between the outer cover and the base, and in addition, the waterproof joint is arranged to communicate the inside and the outside of the antenna, so that the waterproof performance of the antenna can be further enhanced.
Drawings
The invention will be further described with reference to the accompanying drawings, in which embodiments do not constitute any limitation of the invention, and other drawings can be obtained by one of ordinary skill in the art without inventive effort from the following drawings.
FIG. 1 is a schematic diagram of the structure of the present invention;
FIG. 2 is an internal block diagram of the present invention;
FIG. 3 is an exploded view of the structure of the present invention;
wherein: 1-an outer cover; 11-a bottom plate; 12-top plate; 13-a PCB board; 14-supporting columns; 2-a base; 21-a second through hole; 3-a pole holding bracket; 31-a connection; 32-a fixing part; 33-a first through hole; 34-fixing holes; 4-waterproof joint; 41-screws; 51-nut; 52-locking the screw; 6-fastening a screw; 71-a first antenna; 72-a second antenna; 73-a third antenna; 74-fourth antenna.
Detailed Description
The invention will now be described in further detail with reference to the drawings and the specific embodiments, without limiting the scope of the invention thereto.
Example 1
As shown in fig. 1 to 3, the waterproof marine antenna according to the present embodiment includes a housing 1 and a base 2; the base 2 is embedded at the bottom of the outer cover 1; a waterproof adhesive is arranged between the base 2 and the outer cover 1; the waterproof glue is not shown in the figure.
The waterproof marine antenna also comprises a holding pole bracket 3; the pole support 3 comprises a connecting part 31 and a fixing part 32; the connecting portion 31 is provided with a first through hole 33; the base 2 is provided with a second through hole 21; a waterproof joint 4 is arranged between the first through hole 33 and the second through hole 21; the waterproof connector 4 sequentially passes through the first through hole 33 and the second through hole 21 and then stretches into the outer cover 1.
Specifically, the waterproof marine antenna according to this embodiment is characterized in that the base 2 is embedded in the bottom of the outer cover 1, and waterproof glue is arranged between the base 2 and the outer cover 1, so that water can be prevented from entering the antenna from a gap between the outer cover 1 and the base 2, and in addition, the waterproof joint 4 is arranged to be communicated with the inside and the outside of the antenna, so that the waterproof performance of the antenna can be further enhanced.
In the waterproof marine antenna according to the embodiment, a bottom plate 11 and a top plate 12 are arranged in the outer cover 1; a PCB 13 is arranged between the bottom plate 11 and the top plate 12; the PCB 13 is connected with the waterproof connector 4.
Specifically, the waterproof marine antenna according to the present embodiment has the PCB 13 fixed to the base plate 11 and connected to the waterproof connector 4, and can realize electrical signal transmission with the outside.
In the waterproof marine antenna according to the present embodiment, a plurality of support columns 14 are disposed between the bottom plate 11 and the top plate 12 at equal intervals. Stability between the bottom plate 11 and the top plate 12 can be enhanced by providing a plurality of support columns 14.
In the waterproof marine antenna according to the present embodiment, the base plate 11 is provided with a nut 51; the base 2 is provided with a locking screw 52; the base 2 is connected with the bottom plate 11 through a locking screw 52 and a nut 51. The base 2 is connected with the bottom plate 11 through the locking screw 52 and the nut 51, so that the device is convenient and quick to use and can be detached.
In the waterproof marine antenna according to the embodiment, a fastening screw 6 is disposed between the housing 1 and the base 2. The connection of the housing 1 to the base 2 can be further reinforced by the provision of the fastening screw 6.
In the waterproof marine antenna according to the present embodiment, the fixing portion 32 is provided with a plurality of fixing holes 34. Specifically, in fixing the marine antenna of the present embodiment, the pole support 3 may be fixed to the ship by engaging the fixing holes 34 with screws 41.
In the waterproof marine antenna according to the present embodiment, the waterproof joint 4 and the connection portion 31 are connected by a screw 41. The arrangement is convenient to install and can be detached.
In the waterproof marine antenna according to the present embodiment, the top plate 12 is provided with a first antenna 71, a second antenna 72, a third antenna 73 and a fourth antenna 74; the first antenna 71, the second antenna 72, the third antenna 73 and the fourth antenna 74 are all electrically connected to the PCB 13.
Example 2
This embodiment differs from embodiment 1 in that: the outer cover 1 is obtained by injection molding of a heat-conducting and insulating PET composite material, and the heat-conducting and insulating PET composite material comprises the following raw materials in parts by weight:
the heat conducting fiber consists of nano cellulose coated with carbon nano tubes and nano aluminum nitride loaded on the surface of the nano cellulose.
Wherein the diameter of the nanocellulose is 500nm, and the length is 82 mu m.
Wherein the grain diameter of the nano aluminum nitride is 68nm.
The preparation method of the heat conducting fiber comprises the following steps:
(1) Dissolving microcrystalline cellulose in the N-methylmorpholine oxide aqueous solution to obtain a clear spinning stock solution, wherein the dosage of the microcrystalline cellulose is 6wt% of the N-methylmorpholine oxide aqueous solution;
(2) Adding the carbon nano tube into the clarified spinning solution, stirring and homogenizing to obtain suspension spinning solution, wherein the dosage of the carbon nano tube is 4wt% of the clarified spinning solution;
(3) Carrying out electrostatic spinning on the suspension spinning solution to obtain the nano-cellulose coated with the carbon nano-tubes;
(4) Adding nano aluminum nitride and nano cellulose into deionized water, performing ultrasonic dispersion for 3 hours, and performing centrifugal washing and drying to obtain the heat-conducting fiber, wherein the mass ratio of the nano aluminum nitride to the nano cellulose to the deionized water is 1:3:60.
In the step (3), the spinning voltage of the electrostatic spinning is 30kV, and the spinning temperature is 35 ℃.
Wherein the diameter of the glass fiber is 12 mu m, and the length-diameter ratio is 20:1.
The lubricant consists of first flaky talcum powder and second flaky talcum powder according to the weight ratio of 1.5:1, wherein the average particle size of the first flaky talcum powder is 25 mu m, the length-diameter ratio is 3.7:1, the average particle size of the second flaky talcum powder is 63 mu m, and the length-diameter ratio is 1.8:1.
Wherein the light stabilizer consists of bis (1, 2, 6-pentamethyl-4-piperidyl) sebacate and poly (1-hydroxyethyl-2, 6-tetramethyl-4-hydroxypiperidine) succinate according to a weight ratio of 1:1.
Wherein the antioxidant consists of an antioxidant 1010 and an antioxidant 168 in a weight ratio of 1:1.
The preparation method of the heat-conducting and insulating PET composite material comprises the following steps: weighing the raw materials according to the parts by weight, mixing PET, a lubricant, a light stabilizer and an antioxidant, adding the mixture into an extruder from a main feeding port, adding heat-conducting fibers and glass fibers into the extruder from a side feeding port, and performing melt extrusion granulation to obtain the heat-conducting and insulating PET composite material.
Example 3
This embodiment differs from embodiment 1 in that: the outer cover 1 is obtained by injection molding of a heat-conducting and insulating PET composite material, and the heat-conducting and insulating PET composite material comprises the following raw materials in parts by weight:
the heat conducting fiber consists of nano cellulose coated with carbon nano tubes and nano aluminum nitride loaded on the surface of the nano cellulose.
Wherein the diameter of the nanocellulose is 400nm, and the length is 62 mu m.
Wherein the grain diameter of the nano aluminum nitride is 66nm.
The preparation method of the heat conducting fiber comprises the following steps:
(1) Dissolving microcrystalline cellulose in the N-methylmorpholine oxide aqueous solution to obtain a clear spinning stock solution, wherein the dosage of the microcrystalline cellulose is 5wt% of the N-methylmorpholine oxide aqueous solution;
(2) Adding the carbon nano tube into the clarified spinning solution, stirring and homogenizing to obtain suspension spinning solution, wherein the dosage of the carbon nano tube is 3wt% of the clarified spinning solution;
(3) Carrying out electrostatic spinning on the suspension spinning solution to obtain the nano-cellulose coated with the carbon nano-tubes;
(4) Adding nano aluminum nitride and nano cellulose into deionized water, performing ultrasonic dispersion for 2 hours, and performing centrifugal washing and drying to obtain the heat-conducting fiber, wherein the mass ratio of the nano aluminum nitride to the nano cellulose to the deionized water is 1:2:50.
In the step (3), the spinning voltage of the electrostatic spinning is 20kV, and the spinning temperature is 30 ℃.
Wherein the diameter of the glass fiber is 6 mu m, and the length-diameter ratio is 16:1.
The lubricant consists of first flaky talcum powder and second flaky talcum powder according to the weight ratio of 1:1, wherein the average particle size of the first flaky talcum powder is 19 mu m, the length-diameter ratio is 4.5:1, the average particle size of the second flaky talcum powder is 49 mu m, and the length-diameter ratio is 2.2:1.
Wherein the light stabilizer is bis (1, 2, 6-pentamethyl-4-piperidinyl) sebacate.
Wherein the antioxidant consists of an antioxidant 1010 and an antioxidant 168 in a weight ratio of 1:1.
The preparation method of the heat-conducting and insulating PET composite material comprises the following steps: weighing the raw materials according to the parts by weight, mixing PET, a lubricant, a light stabilizer and an antioxidant, adding the mixture into an extruder from a main feeding port, adding heat-conducting fibers and glass fibers into the extruder from a side feeding port, and performing melt extrusion granulation to obtain the heat-conducting and insulating PET composite material.
Example 4
This embodiment differs from embodiment 1 in that: the outer cover 1 is obtained by injection molding of a heat-conducting and insulating PET composite material, and the heat-conducting and insulating PET composite material comprises the following raw materials in parts by weight:
the heat conducting fiber consists of nano cellulose coated with carbon nano tubes and nano aluminum nitride loaded on the surface of the nano cellulose.
Wherein the diameter of the nanocellulose is 600nm, and the length is 103 mu m.
Wherein the particle size of the nano aluminum nitride is 79nm.
The preparation method of the heat conducting fiber comprises the following steps:
(1) Dissolving microcrystalline cellulose in the N-methylmorpholine oxide aqueous solution to obtain a clear spinning stock solution, wherein the dosage of the microcrystalline cellulose is 7wt% of the N-methylmorpholine oxide aqueous solution;
(2) Adding the carbon nano tube into the clarified spinning solution, stirring and homogenizing to obtain suspension spinning solution, wherein the dosage of the carbon nano tube is 5wt% of the clarified spinning solution;
(3) Carrying out electrostatic spinning on the suspension spinning solution to obtain the nano-cellulose coated with the carbon nano-tubes;
(4) Adding nano aluminum nitride and nano cellulose into deionized water, performing ultrasonic dispersion for 2-4h, and performing centrifugal washing and drying to obtain the heat conducting fiber, wherein the mass ratio of the nano aluminum nitride to the nano cellulose to the deionized water is 1:4:70.
In the step (3), the spinning voltage of the electrostatic spinning is 40kV, and the spinning temperature is 40 ℃.
Wherein the diameter of the glass fiber is 18 mu m, and the length-diameter ratio is 123:1.
The lubricant consists of first flaky talcum powder and second flaky talcum powder according to the weight ratio of 2:1, wherein the average particle size of the first flaky talcum powder is 31 mu m, the length-diameter ratio is 2.9:1, the average particle size of the second flaky talcum powder is 77 mu m, and the length-diameter ratio is 1.4:1.
Wherein the light stabilizer is poly (1-hydroxyethyl-2, 6-tetramethyl-4-hydroxypiperidine) succinate.
Wherein the antioxidant consists of an antioxidant 1010 and an antioxidant 168 in a weight ratio of 1:1.
The preparation method of the heat-conducting and insulating PET composite material comprises the following steps: weighing the raw materials according to the parts by weight, mixing PET, a lubricant, a light stabilizer and an antioxidant, adding the mixture into an extruder from a main feeding port, adding heat-conducting fibers and glass fibers into the extruder from a side feeding port, and performing melt extrusion granulation to obtain the heat-conducting and insulating PET composite material.
Comparative example 1
The comparative example is a blank control group, and the comparative example is a composite material formed by PET and PBT according to the weight ratio of 80:15.
Comparative example 2
The difference between this comparative example and example 1 is that: and the heat conducting fiber is replaced by nano aluminum nitride with equal weight.
Comparative example 3
The difference between this comparative example and example 1 is that: the mixture of nano aluminum nitride and carbon nano tube with equal weight is adopted to replace the heat conducting fiber, and the weight ratio of the nano aluminum nitride to the carbon nano tube is 1:1.
The PET composites of example 24 and comparative examples 1-3 were subjected to performance testing for the test items, test criteria and test results as shown in the following Table:
as can be seen from the comparison of the comparative examples 1 and 2, the addition of a large amount of nano aluminum nitride can effectively improve the thermal conductivity of the PET composite material, but can also cause serious reduction of mechanical properties; as can be seen from the comparison between comparative examples 2 and 3, the replacement of part of nano aluminum nitride with carbon nanotubes added into PET composite material can greatly improve the thermal conductivity, but also can improve the electrical conductivity, and does not meet the insulation requirement of part of the fields; from the comparison of example 2 and comparative example 3, it is apparent that nanocellulose as a coating of carbon nanotubes can effectively suppress the decrease of electric resistance, and greatly improve the thermal conductivity in cooperation with nano aluminum nitride, and the mechanical properties of PET composite material are also greatly improved, because it is not necessary to add a large amount of inorganic filler (the total ratio of nano aluminum nitride and carbon nanotubes in the heat conductive fiber is not more than 50 wt%).
The foregoing description is only one preferred embodiment of the invention, and therefore all changes and modifications that come within the meaning and range of equivalency of the structures, features and principles of the invention are intended to be embraced therein.
Claims (6)
1. A waterproof marine antenna, characterized in that: comprises an outer cover (1) and a base (2); the base (2) is embedded at the bottom of the outer cover (1); a waterproof adhesive is arranged between the base (2) and the outer cover (1);
the waterproof marine antenna also comprises a holding pole bracket (3); the pole holding bracket (3) comprises a connecting part (31) and a fixing part (32); the connecting part (31) is provided with a first through hole (33); the base (2) is provided with a second through hole (21); a waterproof joint (4) is arranged between the first through hole (33) and the second through hole (21); the waterproof joint (4) sequentially passes through the first through hole (33) and the second through hole (21) and then stretches into the outer cover (1);
a bottom plate (11) and a top plate (12) are arranged in the outer cover (1); a PCB (13) is arranged between the bottom plate (11) and the top plate (12); the PCB (13) is connected with the waterproof connector (4);
the top plate (12) is provided with a first antenna (71), a second antenna (72), a third antenna (73) and a fourth antenna (74); the first antenna (71), the second antenna (72), the third antenna (73) and the fourth antenna (74) are all electrically connected with the PCB (13).
2. A waterproof marine antenna according to claim 1, wherein: a plurality of support columns (14) are arranged between the bottom plate (11) and the top plate (12) at equal intervals.
3. A waterproof marine antenna according to claim 1, wherein: the bottom plate (11) is provided with a nut (51); the base (2) is provided with a locking screw (52); the base (2) is connected with the bottom plate (11) through a locking screw (52) and a nut (51).
4. A waterproof marine antenna according to claim 1, wherein: a fastening screw (6) is arranged between the outer cover (1) and the base (2).
5. A waterproof marine antenna according to claim 1, wherein: the fixing portion (32) is provided with a plurality of fixing holes (34).
6. A waterproof marine antenna according to claim 1, wherein: the waterproof joint (4) is connected with the connecting part (31) through a screw (41).
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| CN201810990278.6A CN109244628B (en) | 2018-08-28 | 2018-08-28 | Waterproof marine antenna |
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| CN201810990278.6A CN109244628B (en) | 2018-08-28 | 2018-08-28 | Waterproof marine antenna |
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| CN109244628A CN109244628A (en) | 2019-01-18 |
| CN109244628B true CN109244628B (en) | 2024-02-09 |
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| Publication number | Priority date | Publication date | Assignee | Title |
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| CN112164858B (en) * | 2020-09-18 | 2023-03-14 | 中信海洋（舟山）卫星通信有限公司 | Electric isolation mounting structure of shipborne satellite antenna |
Citations (12)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| BE586504A (en) * | 1959-01-22 | 1960-05-03 | Alfred Klapper | Transmitting antenna |
| CN102646867A (en) * | 2012-04-24 | 2012-08-22 | 中电科微波通信(上海)有限公司 | Antenna protective cover |
| CN202487742U (en) * | 2012-01-17 | 2012-10-10 | 嘉兴星网通信技术有限公司 | Pedestal for shipborne satellite antenna |
| CN202487741U (en) * | 2012-01-17 | 2012-10-10 | 嘉兴星网通信技术有限公司 | Shipboard satellite antenna base |
| CN103474771A (en) * | 2013-09-26 | 2013-12-25 | 宁波迪泰电子科技有限公司 | Marine satellite antenna |
| CN103490196A (en) * | 2013-09-02 | 2014-01-01 | 熊猫电子集团有限公司 | Active antenna waterproof radio-frequency connector for ship |
| CN203456586U (en) * | 2013-09-12 | 2014-02-26 | 西安星展测控科技有限公司 | Shipborne communication on the move satellite radome |
| CN204103030U (en) * | 2014-11-17 | 2015-01-14 | 佛山市三水亚创通讯有限公司 | A kind of portable multi-function antenna |
| CN204885433U (en) * | 2015-06-18 | 2015-12-16 | 北京星网卫通科技开发有限公司 | Exceedingly high irdome during on -board moves |
| CN107331962A (en) * | 2017-07-27 | 2017-11-07 | 南京康派电子有限公司 | A kind of marine satellite antenna waterproof outer cover |
| CN206947528U (en) * | 2017-07-27 | 2018-01-30 | 南京康派电子有限公司 | A kind of marine satellite antenna waterproof outer cover |
| CN209071586U (en) * | 2018-08-28 | 2019-07-05 | 东莞市森岭智能科技有限公司 | A kind of waterproof ship antenna |
Family Cites Families (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US9026053B2 (en) * | 2013-02-17 | 2015-05-05 | Fitbit, Inc. | System and method for wireless device pairing |
| CN104780429B (en) * | 2015-01-06 | 2018-06-26 | 康佳集团股份有限公司 | Drain the Bluetooth pairing methods disturbed, main equipment, system and its matching method |
| CN107155123A (en) * | 2017-06-14 | 2017-09-12 | 深圳Tcl新技术有限公司 | Matching method, television set and the readable storage medium storing program for executing of bluetooth equipment and television set |
| CN108055654A (en) * | 2017-12-07 | 2018-05-18 | 锐捷网络股份有限公司 | A kind of classics bluetooth equipment authentication matching process and device |
| CN109041031A (en) * | 2018-08-30 | 2018-12-18 | 北京轩辕联科技有限公司 | Bluetooth automatic matching method, apparatus, mobile unit and vehicle |
| CN112040461B (en) * | 2019-06-03 | 2022-05-24 | 华为技术有限公司 | A method and device for proximity discovery |
-
2018
- 2018-08-28 CN CN201810990278.6A patent/CN109244628B/en active Active
Patent Citations (12)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| BE586504A (en) * | 1959-01-22 | 1960-05-03 | Alfred Klapper | Transmitting antenna |
| CN202487742U (en) * | 2012-01-17 | 2012-10-10 | 嘉兴星网通信技术有限公司 | Pedestal for shipborne satellite antenna |
| CN202487741U (en) * | 2012-01-17 | 2012-10-10 | 嘉兴星网通信技术有限公司 | Shipboard satellite antenna base |
| CN102646867A (en) * | 2012-04-24 | 2012-08-22 | 中电科微波通信(上海)有限公司 | Antenna protective cover |
| CN103490196A (en) * | 2013-09-02 | 2014-01-01 | 熊猫电子集团有限公司 | Active antenna waterproof radio-frequency connector for ship |
| CN203456586U (en) * | 2013-09-12 | 2014-02-26 | 西安星展测控科技有限公司 | Shipborne communication on the move satellite radome |
| CN103474771A (en) * | 2013-09-26 | 2013-12-25 | 宁波迪泰电子科技有限公司 | Marine satellite antenna |
| CN204103030U (en) * | 2014-11-17 | 2015-01-14 | 佛山市三水亚创通讯有限公司 | A kind of portable multi-function antenna |
| CN204885433U (en) * | 2015-06-18 | 2015-12-16 | 北京星网卫通科技开发有限公司 | Exceedingly high irdome during on -board moves |
| CN107331962A (en) * | 2017-07-27 | 2017-11-07 | 南京康派电子有限公司 | A kind of marine satellite antenna waterproof outer cover |
| CN206947528U (en) * | 2017-07-27 | 2018-01-30 | 南京康派电子有限公司 | A kind of marine satellite antenna waterproof outer cover |
| CN209071586U (en) * | 2018-08-28 | 2019-07-05 | 东莞市森岭智能科技有限公司 | A kind of waterproof ship antenna |
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